Burglar-alarfvl



(ModeL) P. MORAN.

BURGLAR ALARM. No. 258,4 58

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e UNtTen States PATENT Greten PETER MORAN, OF PHILADELPHIA,PENNSYLVANIA.

BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 258,&5?, dated May 23,1882.

' Application filed Man 22,1552. (Model) To all wlm it may coccrn Be itknown that I, PETER MORAN, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a new and usefulImprovement in BurglanAlarms, ot' which the following is a full, clear,and exact description.

My invention relates to that class of burglaralarms in which a gong isstruch by clock mechanism for giving the alarm 5 and to this end myinvention consists in a novel eonstruction and arrangement ot' parts, ashereinafter fully described, and pointed out in the elaims.

Reference is to be had to the acconpanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l represents my new and improved burglar-alarm attached to thewall of a room with several cords or wires leading theret'rom to a doorand windows. Fig. 2 is a front elevation of the alarm, the cover ot' thebox in which the mechanism is contained being open; and Flg. 3 is asectional elevation, taken on the line :v x of Fig. 2.

A represents the box in which the alarm mechanism is placed, which boxis adapted to be Secured to the wall or to any pern'anent object bymeans of the rings (l, a or any other suitable means i'or securing thebox may be employed.

B is the clock niechanism, which is ot' ordinary Construction, and doesnot require description in detail. U is the gong, and D D reprcsent thedouble-acting rods, of which there may be any desired number to suit thenumber of windows and doors with which it may be desired to connect thealarm. These rods D D are held in the box by means of the postsff',through which the rods pass, which posts are secured in the box by meansof the plates i t", attached to or made integral with the posts, thesaid plates being perforated for the passage of screws or similarfastenings, as shown in Figs. 1 and 2; and these rods D D are madedouhle-acting by means 'of the springsd, placed upon. the rods betweenthe heads c of the rods and the post f', and any movement of the rodsthrough theposts is communicated to the spring-held escapement-dctent E,which is pivoted to the side of the box by means ot' the pivotedplates'F, pins or studs b Z upon the plate E, and the pins or studs 71,secnred to or formed upon the said rods. The plates F are by preferencemade T-shaped, as shown clearly in Fig. 2, with the divided end j, theparts of which straddle the pins h, and with the diagonal faces or edgesk k at the inner end of the plates, which come between and against thepins or studs b b, as shown; and there will be as many of these plates Fas there are rods D.

To the outer ends of the rods D are sccured the setting wires or cordsl, which pass out the end of the box between the horizontalfrictonrollers c and the vertical friction-rollers c', and lead to thewindow or door with which it is desired to connect the alarm. Thefriction-rollers c and c' are held in the frame L, which is secured tothe box in proper position, as shown* in the drawings, by means ofscrews or any other suitable t'astenings.

In case there are several rods D in the alarm, the plates F will all bepivoted upon the same pivot, j', suitable division-blocks beingplacedbetween them, and the pins or steps b Z in such case will be ot'suflicient length to reach past or above all ot' the plates F, so thatthe longitudinal movement in either direction ot' any one of the rods Dwill move the escapemeutdetent E and give the alarm.

Ncar the post f, through which the rods D pass, the' rods I) areperforated for the passage of the pin g, which is adapted to hold therods against the action ot' the springs in such position that theescapement-detcnt will hold the alarm nechanism at rest.

In setting the alarm, the box having been first sccured to the wall orsome other stationary object, and the pin g being in place, the cords l,any one or all of them, are first carried over suitably-arranged pulleysand drawn just tant and attached to the knob, catch, or any other partof the door or window. All of the cords (if more than one is to be used)having been thus attached, the clock mechanismtis to be wound up by theappliaction of a key in the ordinary manner and the pin g removed, sothat the rods D will be held against the action of the springs by meansof the cords l. In this position the alarm mechanism will still be atrest, and will remain so until one of the IOO windows or doors is openedor tampered with in such manner as to pnll or loosen the cord or wire lattached to it. In ease the oord be pulled, the spring d will permit themovement of the rod D, which Will move the plate F, which will move theescapement-detent and release the alarm neehanism; and should the cordor wire be cnt or loosened or otherwise moved out of its set positionthe spring d will force the rod downward or backword and will move theplate F, and in like manner also release the alarm mechanism and givethe alarm. By this means it will he seen that any tanpering whateverwith the oord or wire will certainly set the alarm mechanism in action.

By means of the friction-rollers c and c' it will be nnderstood that thecords l may he earried in any direction from the alarm and still moveeasily over the rollers, thus increasing the certainty of the action ot'the alarm.

Having thns described my invention, what I claim as new, and desire tosecure by Letters Patent, is

, 1. The comhinatiomwith escapement-detent and alarm meehanism, of thespring-pressed slding rods D, and the plate F, connect-ing the rods withthe detent, suhstantially as and for the purpose set forth.

2. The combination, with the escapenentdetentE, provided with the pinsI), of the sliding rods D, provided with the pins h, and the T-s hapedplate F, provided with the inclies k and the slot, snbstantially as andfor the purpose set forth.

3. The combination, with the box A, provided with the perforated postsff', and the detent E, provided with pins b, ot' the rods D, the springsd, and the T-shaped plate F, provided with the inclines Ic,snbstantially as and for the purpose set forth.

PETER MORAN.

Witnesses SAML. F. FLooD, Jr., FRAS. G. THoMAs.

